我在Angular 7 / Typescript上工作​​，但是在使用ng2-charts时遇到了问题。我想使用输出（chartClick），但更改数据（带有一些HTML输入）后，它不再起作用。

HTML：

<canvas baseChart width="100%" height="50%" [datasets]="barChartData" [labels]="barChartLabels"
    [options]="barChartOptions" chartType="bar" [colors]="colors" (chartClick)="chartClicked($event)">
  </canvas>

组件：

 chartClicked(event: any) {
    if (event.active.length > 0) {
      const chart = event.active[0]._chart;
      const activePoints = chart.getElementAtEvent(event.event);
        if ( activePoints.length > 0) {
........................................................
 }

  ngOnInit() {

    for (const dataByValidationType of this.barChartData) {
      if (!this.chartService.isDynamicStatusById(dataByValidationType.id,this.folder)) {
        dataByValidationType.backgroundColor = patternomaly.draw('diagonal',dataByValidationType.backgroundColor,'#ffffff70',10);
      }
      dataByValidationType.borderColor = '#00000080';
      dataByValidationType.borderWidth = 1;
    }
    this.chart.options = this.barChartOptions;
    if (this.mode === EChartViewMode.validation) {
      this.chart.options.scales.yAxes[0].scaleLabel.labelString = 'Nombre de visas';
    } else {
      this.chart.options.scales.yAxes[0].scaleLabel.labelString = 'Nombre de documents';
    }

  }

  ngOnChanges(changes: SimpleChanges) {
    if (changes.barChartData.firstChange) {
      this.modifyColors();
    }
    if (!changes.barChartData.firstChange) {
      this.reloadChart();
    }
  }

  reloadChart() {
    if (this.chart) {
     //  this.chart.chart.destroy();
      this.chart.chart.update();
      this.modifyColors();
      this.chart.chart.options = this.barChartOptions;
      this.chart.chart.data.labels = this.barChartLabels;
      this.chart.chart.data.datasets = this.barChartData;
      if (this.mode === EChartViewMode.validation) {
        this.chart.chart.options.scales.yAxes[0].scaleLabel.labelString = 'Nombre de visas';
      } else {
        this.chart.chart.options.scales.yAxes[0].scaleLabel.labelString = 'Nombre de documents';
      }
    }
  }

提前谢谢！